Test mechanism for internal resistance and external resistance of anti-static wrist strap

Abstract

The utility model relates to a testing mechanism for internal resistance and external resistance of an anti-static wrist strap. The device comprises a measuring frame. The conductive rod is horizontally placed on the measuring frame, and one axial end of the conductive rod is provided with a connecting part; the insulating rod is horizontally stacked on the conductive rod, and the conductive rod and the insulating rod which are stacked can be sleeved with the wrist strap ring so that the conductive piece or the connecting buckle can make contact with the insulating rod; the resistance tester is connected with a first test wire and a second test wire, the first test wire is in contact fit with the connecting part, and the second test wire is used for being in contact fit with the connecting buckle or the wrist strap wire. The device can quickly and accurately measure the internal resistance and the external resistance of the anti-static wrist strap, and is simple in structure, simple in testing process and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-static, in particular to a test mechanism for the internal resistance and external resistance of an anti-static wristband. Background Art

[0002] An anti-static wristband is a tool used to prevent static electricity from damaging electronic components and devices, usually consisting of a wristband and a grounding wire. When in use, the wristband is put on the wrist to ensure good contact with the skin. A conductive sheet is arranged on the inner side of the wristband and is in close contact with the skin to conduct static electricity. One end of the wristband wire is inserted into the connection buckle (metal buckle) at the conductive sheet of the wristband to ensure firm connection. The other end of the wristband wire is provided with a clip or a plug for connecting to a grounding device.

[0003] In the ESD management system of semiconductor devices, according to relevant standards and technical requirements, it is necessary to test the internal resistance and external resistance of the anti-static wristband (wrist ring) and determine whether it meets the specification requirements. These tests are crucial for ensuring that the anti-static wristband can effectively prevent static electricity accumulation during use and protect semiconductor devices from static electricity damage.

[0004] However, when the existing test means are used to test the internal resistance and external resistance of the anti-static wristband, proprietary equipment and instruments are required, which not only increases the complexity of the test process but also raises the test cost. Summary of the Invention

[0005] Therefore, the utility model provides a test mechanism for the internal resistance and external resistance of an anti-static wristband, which can quickly and accurately measure the internal resistance and external resistance of the anti-static wristband, and has a simple structure, a simple test process and low cost.

[0006] To solve the above technical problems, the utility model provides a test mechanism for the internal resistance and external resistance of an anti-static wristband. The anti-static wristband includes a wristband ring, a conductive sheet arranged inside the wristband ring, a connection buckle connected to the conductive sheet and protruding from the surface of the wristband ring, and a wristband wire detachably connected to the connection buckle. The test mechanism includes:

[0007] A measuring frame;

[0008] A conductive rod, which is horizontally placed on the measuring frame, and a connection part is arranged at one axial end of the conductive rod;

[0009] An insulating rod, which is horizontally stacked on the conductive rod. Wherein, the wristband ring can be sleeved on the stacked conductive rod and insulating rod, so that the conductive sheet or the connection buckle contacts the insulating rod;

[0010] A resistance tester is connected with a first test wire and a second test wire. The first test wire is in contact fit with the connecting part, and the second test wire is used for contact fit with the connecting buckle or the wristband wire.

[0011] In an embodiment of the present utility model, the measuring frame includes two support plates arranged oppositely, and support grooves are vertically formed in each of the support plates.

[0012] In an embodiment of the present utility model, the conductive rod and / or the insulating rod has a cylindrical structure.

[0013] In an embodiment of the present utility model, the connecting part is a screw hole.

[0014] In an embodiment of the present utility model, the conductive rod is a metal rod.

[0015] The above technical solution of the present utility model has the following advantages compared with the prior art:

[0016] The test mechanism for the internal resistance and external resistance of the anti-static wristband of the present utility model realizes the accurate determination of the internal and external impedance of the wristband material, greatly improves the accuracy of the test result, and ensures that the anti-static wristband can effectively prevent static electricity accumulation during use and protect electronic components from static electricity damage.

[0017] This test mechanism is composed of simple components such as a measuring frame, a conductive rod and an insulating rod. The overall structure is simple, which is convenient for manufacturing and maintenance. At the same time, an existing impedance meter is used for measurement, without the need to specially invest in expensive test instruments, reducing the test cost. Description of the Drawings

[0018] In order to make the content of the present utility model easier to be clearly understood, the following further details the present utility model according to the specific embodiments of the present utility model and in combination with the drawings.

[0019] Figure 1 It is the front view structure diagram of the test mechanism for the internal resistance and external resistance of the anti-static wristband of the present utility model.

[0020] Figure 2 It is the side view structure diagram of the test mechanism for the internal resistance and external resistance of the anti-static wristband of the present utility model.

[0021] Figure 3 It is the structure diagram of the wearing test of the present utility model.

[0022] Explanation of the reference numerals in the drawings:

[0023] 1. Measuring frame; 11. Support plate; 111. Support groove;

[0024] 2. Conductive rod; 21. Connecting part;

[0025] 3. Insulating rod;

[0026] 4. Resistance tester; 41. First test wire; 42. Second test wire;

[0027] 51. Wristband loop; 52. Conductive sheet; 53. Wristband wire. Detailed implementation manners

[0028] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present utility model and be able to implement it, but the illustrated embodiments are not intended to limit the present utility model.

[0029] In the present utility model, if there is a description of directions (up, down, left, right, front and back), it is only for the convenience of describing the technical solution of the present utility model, rather than indicating or implying that the technical features referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0030] In the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more, and "greater than", "less than", "exceeding", etc. are understood as not including the present number; "above", "below", "within", etc. are understood as including the present number. In the description of the present utility model, if there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0031] In the present utility model, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense. For example, they can be directly connected, or indirectly connected through an intermediate medium; they can be fixedly connected, or detachably connected, and can also be integrally formed; they can be mechanically connected, electrically connected or capable of communicating with each other; they can be the connection inside two components or the interaction relationship between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in the present utility model in combination with the specific content of the technical solution.

[0032] Refer to Figure 1 , Figure 2 As shown in, a test mechanism for the internal resistance and external resistance of an anti-static wristband of the present utility model, the anti-static wristband includes a wristband loop 51, a conductive sheet 52 arranged inside the wristband loop 51, a connection buckle (metal buckle) connected to the conductive sheet 52 and protruding from the surface of the wristband loop 51, and a wristband wire 53 detachably connected to the connection buckle, and includes:

[0033] Measuring frame 1;

[0034] A conductive rod 2, the conductive rod 2 is horizontally placed on the measuring frame 1, and a connecting part 21 is arranged at one axial end of the conductive rod 2;

[0035] An insulating rod 3, the insulating rod 3 is horizontally stacked on the conductive rod 2. Among them, the wristband loop 51 can be sleeved on the stacked conductive rod 2 and insulating rod 3, so that the conductive sheet 52 or the connecting buckle contacts the insulating rod 3;

[0036] A resistance tester 4, connected with a first test wire 41 and a second test wire 42, the first test wire 41 is in contact fit with the connecting part 21, and the second test wire 42 is used for contact fit with the connecting buckle or the wristband wire 53.

[0037] According to the characteristics of the wristband, a simple test auxiliary mechanism composed of a metal rod, an insulating rod 3 and an insulating plate is designed. By using an existing impedance meter, the internal resistance and external resistance of the wristband can be measured. The surface contact method of the metal rod and the insulating rod 3 with the inner and outer surface materials of the wristband replaces the original point contact method, and cleverly realizes the accurate determination of the internal and external impedance of the wristband material without investing in additional instruments.

[0038] In one embodiment, the measuring frame 1 includes two support plates 11 arranged opposite to each other, and support grooves 111 are vertically opened along each support plate 11.

[0039] In one embodiment, the conductive rod 2 and the insulating rod 3 are in a cylindrical structure. The diameter of the conductive rod 2 is 3 cm and the length is 30 cm; the diameter of the insulating rod 3 is 3 cm and the length is 30 cm. The cylindrical structure provides a stable contact area, ensuring the stability of surface contact and the accuracy of measurement.

[0040] In the traditional point contact measurement method, the contact point between the conductive sheet 52 and the test wire is prone to contact resistance, resulting in measurement errors. By designing the surface contact of the metal rod and the insulating rod 3 with the inner and outer surfaces of the wristband, the contact resistance can be reduced and the measurement accuracy can be improved. The surface contact method increases the contact area, distributes the contact resistance, and reduces the uncertainty of measurement.

[0041] In one embodiment, the connecting part 21 is a screw hole. The screw hole design facilitates the connection of the test wire, ensures firm connection, and reduces the influence of contact resistance on the test result.

[0042] In one embodiment, the conductive rod 2 is a metal rod, such as copper, aluminum, stainless steel, etc. The insulating rod 3 can be made of polycarbonate, polytetrafluoroethylene, etc.

[0043] During operation, connect the positive and negative poles of the resistance tester 4 to the first test wire 41 and the second test wire 42 respectively. Then, make the other ends of the first test wire 41 and the second test wire 42 contact the two terminal ends of the wristband wire 53 respectively, and place them on the insulating board for measurement. Read the reading on the surface resistance meter to ensure that the resistance of the wristband wire 53 itself meets the standard;

[0044] Place the conductive rod 2 and the insulating rod 3 on the test stand in sequence. Put the front side of the wristband loop 51 on the two rods. The inner metal surface (conductive sheet 52) of the wristband loop 51 is in full contact with the insulating rod 3. Then, insert the first test wire 41 of the resistance tester 4 into the screw hole of the conductive rod 2, and connect the second test wire 42 to the connection buckle for internal resistance measurement. Read the reading on the resistance tester 4; when measuring the external resistance, turn the wristband loop 51 over so that the connection buckle is in full contact with the insulating rod 3;

[0045] Refer to Figure 3 As shown, when a person wears the wristband and tightly holds the conductive rod 2, one end of the wristband wire 53 is connected to the resistance tester 4 through the second test wire 42. One end of the first test wire 41 is inserted into the screw hole of the conductive rod 2, and the other end is connected to the resistance tester 4. Read the reading on the surface resistance meter to evaluate the anti-static effect of the wristband during actual wearing.

[0046] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the examples, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A testing mechanism for internal resistance and external resistance of an anti-static wrist strap, the anti-static wrist strap comprising a wrist strap ring (51), a conductive sheet (52) arranged inside the wrist strap ring (51), a connecting buckle connected to the conductive sheet (52) and protruding from the surface of the wrist strap ring (51), and a wrist strap line (53) detachably connected to the connecting buckle, characterized in that: include: Measuring stand (1); A conductive rod (2), the conductive rod (2) being placed horizontally on the measuring frame (1), and a connecting portion (21) being provided at one axial end of the conductive rod (2); an insulating rod (3), the insulating rod (3) being horizontally stacked on the conductive rod (2), wherein the wristband ring (51) can be sleeved on the stacked conductive rod (2) and the insulating rod (3) so that the conductive sheet (52) or the connecting buckle is in contact with the insulating rod (3); A resistance tester (4) is connected to a first test wire (41) and a second test wire (42), wherein the first test wire (41) contacts and cooperates with the connecting portion (21), and the second test wire (42) is used to contact and cooperate with the connecting buckle or the wristband wire (53).

2. The testing mechanism for the internal resistance and external resistance of an anti-static wrist strap according to claim 1, characterized in that: The measuring frame (1) comprises two supporting plates (11) arranged opposite to each other, and a supporting groove (111) is vertically provided along each supporting plate (11).

3. The testing mechanism for the internal resistance and external resistance of an anti-static wrist strap according to claim 1, characterized in that: The conductive rod (2) and / or the insulating rod (3) are in a cylindrical structure.

4. The testing mechanism for the internal resistance and external resistance of an anti-static wrist strap according to claim 1, characterized in that: The connecting portion (21) is a screw hole.

5. The testing mechanism for the internal resistance and external resistance of an anti-static wrist strap according to claim 1, characterized in that: The conductive rod (2) is a metal rod.

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